Papaya Genotype Resistance to Powdery Mildew: 20 Dioecious Progenies

20 dioecious papaya genotypes were evaluated in a greenhouse experiment for resistance to powdery mildew. The study, authored by Cláudia Roberta Ribeiro de Oliveira, measured incidence and severity of the disease on leaves. Heritability estimates ranged from 51.57% to 67.82%, and six genotypes (PMI1, PMI6, PMI8, PMI11, PMI12, PMI15) showed potential for reducing both incidence and severity.

Use Cases

• Identify papaya genotypes with high resistance to powdery mildew based on incidence and severity scores.
• Estimate genetic parameters like heritability and selective accuracy for disease resistance traits.
• Select parent plants for breeding programs aimed at reducing powdery mildew in papaya crops.

Strengths

• Data is derived from a controlled greenhouse experiment using a randomized block design with four replicates.
• Heritability for resistance traits was quantified, ranging from 51.57% to 67.82%.
• Selective accuracy for the evaluated traits was reported as above 70%.

Limitations

• Row count and specific column-level documentation are absent; field semantics must be inferred after download.
• The dataset's freshness is unverified as the last update date is unknown.
• Data may reflect geographic bias inherent to the study's focus on Brazilian papaya landraces.

Provenance

Source

Cláudia Roberta Ribeiro de Oliveira, via paperswithcode.

Collection Method

Data was collected from a greenhouse experiment evaluating 20 papaya genotypes in a randomized block design.

Geography

Brazil (study context involves papaya landraces from the extensive Brazilian territory).